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Memory leaks and high CPU usage with typescript on dev mode

See original GitHub issue

Prerequisites

I have written a descriptive issue title
I have searched existing issues to ensure it has not already been reported

Fastify version

3.0.0

Plugin version

cli-2.13.0

Node.js version

16.3.0

Operating system

Windows

Operating system version (i.e. 20.04, 11.3, 10)

Description

When running “npm run dev” with the default typescript template that comes with cli. a crazy continuous memory leak and high CPU usage occur. sometimes it hits close to 1GB and 10% usage on 8 core CPU which is not good. the problem doesn’t occur on npm run start or javascript template.

Steps to Reproduce

1- run fastify generate test --lang=ts 2- run npm run dev

Expected Behavior

No response

Issue Analytics

State:
Created 2 years ago
Comments:6 (3 by maintainers)

Top GitHub Comments

1reaction

StarpTechcommented, Jun 17, 2021

If it is really a problem. It can be reduced by disable type-checking. https://github.com/TypeStrong/ts-node#typechecking

1reaction

mhmd-22commented, Jun 17, 2021

As @StarpTech said. it’s looks like a tooling issue with typescript. I tried different type of projects and the memory consumption is consistent depending on the project size. I’ll close the issue for now as it’s not affect the production.

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